Indoor Unit Data Monitoring - Hisense HCPC-H2M1C Installation Instructions Manual

4 Air Conditioner Monitoring
② Indoor unit connection confirmation
Taking Mapping Table communication address as example, operate 1064 address, refer to Mapping Table for others, as
follows:
Modbus RTU:
Read the connection state of indoor units in No. 0 refrigerant system: 32 03 04 28 00 08 C0 F7
Modbus TCP:
Read the connection state of indoor units in No. 0 refrigerant system: 00 01 00 00 00 06 FF 03 04 28 00 08
It only reads the value of 8 registers above, actually it can read 123 registers the most at one time.
● After sent one control command, need to wait for the correct response code returned by Modbus before
sending next control command. If do not take this as your control method, please set the internal between
two control command to be more than 500ms.
● Though outdoor unit·indoor unit connection confirmation, you can know how many outdoor units and
Note
indoor units in each system, and know the system number and address number, can compose into 16 digits
data (NodeID) by using the system number + address number, at last calculate the Mapping Table
communication address of all connected indoor units in the Mapping Table through NodeID, then monitor
and control the data of connected indoor units.

4.10 Indoor Unit Data Monitoring

Taking the Mapping Table communication address of the first indoor unit as example, operate 40000 address, refer to the
Mapping Table for others, as follows:
Modbus RTU:
Data read of connected the first indoor unit: 32 03 9C 40 00 1D AF 84
Modbus TCP:
Data read of connected the first indoor unit: 00 01 00 00 00 06 FF 03 9C 40 00 1D
● After sent one control command, wait for the correct response code returned by Modbus before sending
next control command. If do not take this as your control method, please set the internal between two
control command to be more than 500ms.
Note
● You can obtain the operating state of current indoor unit, after operated air conditioner by using the
control bit of each indoor unit, you can read the data in above indoor unit, and check whether the air
conditioner runs according to the control bit operation or not.
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